aNa2O + K2O versus SiO2diagram.bAFM (Na2O + K2O–MgO–FeOT) diagram.c,e,gChondrite normalized rare earth element diagrams.d,f,hPrimitive mantle-normalized trace element diagrams. Results from the adjacent and coeval Dengfeng Complex that preserves pristine tonalitic TTG gneisses, high-...
(which are generated by radioactive heating of the interior) and ridge pushing (generated by the upwelling of mantle at divergent boundaries [such asoceanic ridges]) are believed to cause the lateral movements of the tectonic plates (and thecontinentsthat rest on top of them) at a rate of ...
divergent plate boundary Figure 7: Idealized cross section of a divergent plate boundary showing the structure... Encyclopædia Britannica, Inc. plate movement on a sphere Theoretical depiction of the movement of tectonic plates across Earth's surface... Encyclopædia Britannica, Inc.History...